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Haier MRV 5 Instrucciones De Instalación página 42

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INSTALLATION INSTRUCTIONS
Failure Codes
Digital tube
Failure code definition
indication on
main unit
43-0
Discharging temp sensor Tdi too low
protection
43-1
Discharging temp sensor Td1 too low
protection
45
Communication failure between outdoors
46-0
Communication failure with INV1 module
board
46-1
Communication failure with INV2 module
board
46-4
Communication with fan 1 module board
46-5
Communication with fan 2 module board
47
Communication failure with wireless module
51-0
LEVa1 over current protection
51-1
LEVa2 over current protection
52-0
LEVa1 disconnection fault
52-1
LEVa2 disconnection fault
74
Emergency Stop
75-0
High and low pressure difference is too small
76-0
Incorrect outdoor address or capacity setting
76-1
76-2
83
Incorrect parameter setting or incorrect
match of outdoor unit
99-x
Program self default
42
Failure description
In normal operation, If Td < CT + 50 °F (10 °C) for continuous
5 minutes, the unit stops and alarms. 2 minutes and 50 s later,
resume automatically. If it occurs 3 times in an hour, the failure
is confirmed.
Continuous 30 s no communication
Wireless module can not detect 2 minute alarm
LEV drive chip detection
External interface control(The machine will stop quickly after
switch cut off)
Pd - Ps = 51 psi for 3 minutes, if the outdoor protective stop.
Protect stop after 5 minutes, then restart.
The number of sub machine and host data does not match the
EERPOM set
The address of sub machine and host data does not match the
EEPROM set
The capacity setting of sub machine and host data does not
match the EEPROM set
Outdoor machine type dial code settings error or with the host
model does not match
X=0~5
Remarks
Once
confirmed
un-resumable
Resumable
Resumable
Once
confirmed
un-resumable
Reset
Non
recoverable
Resumable
31-5000573 Rev. 2

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